package com.wuhuacloud.web.controller.common;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.wuhuacloud.common.exception.UtilException;
import com.wuhuacloud.common.utils.SecurityUtils;
import com.wuhuacloud.system.domain.SysFileInfo;
import com.wuhuacloud.system.service.ISysFileInfoService;
import com.wuhuacloud.system.service.cloud.OSSFactory;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.MediaType;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;
import com.wuhuacloud.common.config.RuoYiConfig;
import com.wuhuacloud.common.constant.Constants;
import com.wuhuacloud.common.core.domain.AjaxResult;
import com.wuhuacloud.common.utils.StringUtils;
import com.wuhuacloud.common.utils.file.FileUploadUtils;
import com.wuhuacloud.common.utils.file.FileUtils;
import com.wuhuacloud.framework.config.ServerConfig;

/**
 * 通用请求处理
 * 
 * @author ruoyi
 */
@RestController
public class CommonController
{
    private static final Logger log = LoggerFactory.getLogger(CommonController.class);

    @Autowired
    private ServerConfig serverConfig;

    @Autowired
    private ISysFileInfoService sysFileInfoService;

    /**
     * 通用下载请求
     * 
     * @param fileName 文件名称
     * @param delete 是否删除
     */
    @GetMapping("common/download")
    public void fileDownload(String fileName, Boolean delete, HttpServletResponse response, HttpServletRequest request)
    {
        try
        {
            if (!FileUtils.checkAllowDownload(fileName))
            {
                throw new Exception(StringUtils.format("文件名称({})非法，不允许下载。 ", fileName));
            }
            String realFileName = System.currentTimeMillis() + fileName.substring(fileName.indexOf("_") + 1);
            String filePath = RuoYiConfig.getDownloadPath() + fileName;

            response.setContentType(MediaType.APPLICATION_OCTET_STREAM_VALUE);
            FileUtils.setAttachmentResponseHeader(response, realFileName);
            FileUtils.writeBytes(filePath, response.getOutputStream());
            if (delete)
            {
                FileUtils.deleteFile(filePath);
            }
        }
        catch (Exception e)
        {
            log.error("下载文件失败", e);
        }
    }

    /**
     * 通用上传请求
     */
    @PostMapping("/common/upload")
    public AjaxResult uploadFile(MultipartFile file) throws Exception
    {
        if (file.isEmpty()) {
            throw new UtilException("上传文件不能为空");
        }

        //上传文件
        String suffix = file.getOriginalFilename().substring(file.getOriginalFilename().lastIndexOf("."));
        String url = OSSFactory.build().uploadSuffix(file.getBytes(), suffix);

        SysFileInfo sysFileInfo = new SysFileInfo();
        sysFileInfo.setCreateBy(SecurityUtils.getUsername());
        sysFileInfo.setFileName(file.getOriginalFilename());
        sysFileInfo.setFilePath(url);
        sysFileInfoService.insertSysFileInfo(sysFileInfo);

        AjaxResult ajax = AjaxResult.success(sysFileInfo);
        ajax.put("fileName", sysFileInfo.getFileName());
        ajax.put("url", url);
        return ajax;
    }

    /**
     * 通用删除
     */
    @PostMapping("/common/upload/del")
    public AjaxResult delFile(SysFileInfo sysFileInfo){

        OSSFactory.build().delFile(sysFileInfo.getFileName());

        sysFileInfoService.deleteSysFileInfoById(sysFileInfo.getFileId());

        return AjaxResult.success();
    }

    /**
     * 本地资源通用下载
     */
    @GetMapping("/common/download/resource")
    public void resourceDownload(String resource, HttpServletRequest request, HttpServletResponse response)
            throws Exception
    {
        try
        {
            if (!FileUtils.checkAllowDownload(resource))
            {
                throw new Exception(StringUtils.format("资源文件({})非法，不允许下载。 ", resource));
            }
            // 本地资源路径
            String localPath = RuoYiConfig.getProfile();
            // 数据库资源地址
            String downloadPath = localPath + StringUtils.substringAfter(resource, Constants.RESOURCE_PREFIX);
            // 下载名称
            String downloadName = StringUtils.substringAfterLast(downloadPath, "/");
            response.setContentType(MediaType.APPLICATION_OCTET_STREAM_VALUE);
            FileUtils.setAttachmentResponseHeader(response, downloadName);
            FileUtils.writeBytes(downloadPath, response.getOutputStream());
        }
        catch (Exception e)
        {
            log.error("下载文件失败", e);
        }
    }
}
